CN211280744U

CN211280744U - Headrest for vehicle

Info

Publication number: CN211280744U
Application number: CN201922426163.7U
Authority: CN
Inventors: 塚田真辉; 诸井康一; 阿部仁志; 小岛崇文; 桥本聪; 牧田直之
Original assignee: Tachi S Co Ltd
Current assignee: Tachi S Co Ltd
Priority date: 2019-02-06
Filing date: 2019-12-27
Publication date: 2020-08-18
Anticipated expiration: 2029-12-27
Also published as: US20200247293A1; JP7051242B2; JP2020125081A; US11072268B2

Abstract

The utility model relates to a headrest for vehicle. In order to reliably prevent the leakage of the foam material from the opening and to relatively easily and reliably perform the operation of pressing the portion of the projection including the opening into the bag body even in the case of a door-shaped headrest, a vehicle headrest is provided with: a skin covering a surface; a foaming material filled in the inside covered with the skin; and a stay extending outward from the skin filled with the foam material, the headrest having a gate shape in which a central portion of the lower surface is recessed, a groove portion formed in the central portion of the recessed gate shape and in which the skins are butted, and a member softer than the skins sewn to respective end portions of the butted skins inside the groove portion.

Description

Headrest for vehicle

Technical Field

The present invention relates to a headrest for a vehicle seat, and more particularly to a door-shaped headrest in which a central portion of a lower surface has a concave shape.

Background

With respect to a headrest for a vehicle seat, japanese patent application laid-open No. 2007-222404 describes the following: after sewing the plurality of skin pieces along the sewing head at the edge end, the entire skin is turned over from the front to the back from the opening (inlet) at the bottom of the skin so that the sewing head is located inside, and is formed into a bag shape as a whole, and a foaming material is injected into the bag shape from the inlet at the bottom to foam and expand the foaming material.

Further, japanese patent application laid-open publication No. 2014-110833 describes the following: the headrest body is formed by superposing the surface fabrics of the skin sheets on each other, sewing them with a seam left at the edge, turning the surface fabrics inside out so as to face the front side, thereby forming a bag body, and foaming the foamed polyurethane material inside the bag body provided in the foam molding die.

As described in japanese patent laid-open nos. 2007 and 222404 and 2014 and 110833, a headrest for a vehicle seat is produced by sewing a plurality of skin sheets, such as a fabric or a synthetic leather, in which a foamed polyurethane sheet is bonded to a surface fabric and a polyurethane film is bonded to the back surface of the surface fabric, while the surface fabric is superimposed on the other, to form a bag body, inverting the front and back surfaces of the bag body, injecting a core portion into the bag body, and performing foam molding to integrally foam the skin.

The headrests described in japanese patent laid-open nos. 2007 and 222404 and 2014 and 110833 are substantially trapezoidal in shape and have flat shapes in the front and rear directions, and when the entire surface skin after sewing is turned back in the front and rear directions, the entire surface skin is turned back from an opening portion having a relatively wide width formed by protruding from the bottom portion of the headrest. Then, the opening is pressed into the bag body so that the protrusion is not present on the outside of the headrest.

Since the opening can be formed to have a relatively wide width on the bottom surface of the headrest having a substantially trapezoidal shape, the opening is easily closed in a state of being flexibly deformed and being press-fitted into the bag body, and therefore, it is not necessary to sew the opening in advance before press-fitting into the bag body. As a result, the operation of pressing the opening into the bag body can be performed relatively easily.

In contrast, in the case of a headrest having a door shape with a concave shape in the central portion of the lower surface, the opening formed in the bottom portion of the epidermis can be formed only on a relatively flat surface of the bottom portion of the concave-shaped recess. That is, it is not possible to form the headrest in a wide width as in the case of the conventional headrest having a substantially trapezoidal shape and a flat shape in the front and rear. Therefore, in the case of a door-shaped headrest, the width dimension of the opening formed in the bottom portion of the epidermis must be made smaller than in the case of a conventional headrest having a substantially trapezoidal shape and a flat shape in the front and rear.

As described above, after the front and rear sides are inverted through the opening having a small width, as in the conventional techniques described in japanese patent laid-open nos. 2007-222404 and 2014-110833, when the portion of the protrusion including the opening is pushed into the bag body in a state where the opening is opened without sewing, the rigidity of the opening increases in accordance with the small width, and there is a possibility that the opening is not brought into close contact with the inside of the bag body and the gap is opened. If a gap is present in the opening, when the foaming material is supplied into the bag body and the skin is integrally foam-molded, the foaming material may leak out from the gap, and the quality of the appearance of the headrest may be deteriorated.

As a countermeasure, the following method can be considered: the opening of the skin sheet is sewn and then pressed into the bag body so that the protrusion is not exposed to the outside of the headrest. However, in this case, the work of pushing the protruding portion including the sewn opening into the bag body is inferior to that of the conventional art in workability by narrowing the opening, and thus a long work time is required, or the protruding portion cannot be pushed into the bag body completely.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the problem of the prior art, and provides a headrest for a vehicle, which can reliably prevent the leakage of a foam material from an opening even in the case of a door-shaped headrest, and can relatively easily and reliably perform an operation of pressing a protruding portion including the opening into the interior of a bag body.

In order to solve the above problem, the present invention provides a headrest attached to a vehicle seat, the headrest including: a skin covering a surface; a foamed member filled in the inside covered with the skin; and a stay extending outward from the skin in which the foam material is filled, the headrest having a gate shape in which a central portion of a lower surface is recessed, a groove portion in which the skins are butted is formed in the central portion of the recessed gate shape, and a member softer than the skins is sewn to each end portion of the butted skins inside the groove portion.

In order to solve the above problem, the present invention provides a headrest attached to a vehicle seat, the headrest including: the headrest has a door shape in which the central portion of the lower surface is recessed, a groove portion in which the skins are butted is formed in the central portion of the door shape, the butted skins are sewn at their respective end portions by a member softer than the skins in the groove portion, and the members softer than the skins after being sewn to the respective end portions of the skins are sewn to each other.

According to the present invention, even in the case of a door-shaped headrest, it is possible to reliably prevent the foam from leaking from the opening, and to relatively easily and reliably perform the operation of pressing the protruding portion including the opening formed in the bottom portion of the cover into the bag body.

These features and advantages of the present invention will become apparent from the following more detailed description of the preferred embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

Fig. 1 is a perspective view showing an appearance of a door-shaped headrest according to an embodiment of the present invention.

Fig. 2 is a plan view of the door-shaped headrest according to the embodiment of the present invention, as viewed from the bottom surface side of fig. 1.

Fig. 3 is a plan view of the first cover and the first fabric mat showing a state after the first fabric mat is sewn to the first cover of the door-shaped headrest according to the embodiment of the present invention.

Fig. 4 is a front view showing a state in which the first skin and the second skin of the door-shaped headrest according to the embodiment of the present invention are sewn together.

Fig. 5 is a front view of the surface skin showing a state in which the sewn surface skin of the door-shaped headrest according to the embodiment of the present invention is inverted through the opening.

Fig. 6 is a front view of the epidermis showing a state in which a part of the stay is inserted into the interior of the sewn bag-shaped epidermis in the door-shaped headrest according to the embodiment of the present invention.

Fig. 7 is a front view of the epidermis showing a state in which the opening portion is sewn after a part of the stay is inserted into the interior of the sewn bag-shaped epidermis in the door-shaped headrest according to the embodiment of the present invention.

Fig. 8 is a view of the cross section B-B of the door-shaped headrest according to the embodiment of the present invention in the state shown in fig. 7.

Fig. 9 is a front view of the surface skin showing a state in which the opening of the door-shaped headrest according to the embodiment of the present invention is sewn and a part of the stay is inserted into the interior of the sewn bag-shaped surface skin, and then the sewn opening is inserted into the interior of the bag-shaped surface skin and pressed into the interior.

Fig. 10 is a view of the C-C section in the state of fig. 9 in which the sewn opening of the door-shaped headrest according to the embodiment of the present invention is inserted into the bag-shaped skin and pressed into the bag-shaped skin.

Fig. 11 is a front view of the surface skin showing a state in which the foamed urethane material is supplied into the bag-shaped surface skin after the sewn opening portion of the door-shaped headrest according to the embodiment of the present invention is inserted into the bag-shaped surface skin and pressed into the bag-shaped surface skin.

Detailed Description

The utility model discloses a following structure: the method for manufacturing the headrest includes the steps of sewing a plurality of skin members of a door-shaped headrest into a bag shape by providing a protruding opening part which is not sewn in a part of the headrest with the front surfaces facing each other, inverting the front and back of the sewn skin material through the opening part to form a bag-shaped skin, inserting a support into the bag-shaped skin, sewing a flexible member sewn to the opening part of the bag-shaped skin to close the opening part, and pressing the protruding part including the opening part sewn to the sewn skin member into the bag-shaped skin. Thus, even in a door-shaped headrest, the integral foam molding can be performed without deteriorating the appearance and without deteriorating the workability.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Example 1

Fig. 1 shows an appearance of a headrest 100 of the present embodiment. The headrest 100 is formed in a door shape in which a central portion 120 of the lower surface of the main body portion 110 is recessed, and the support posts 180 extend from the

protruding portions

130 and 140 on both sides.

As described in patent document 2, the surface of the main body portion 110 of the headrest 100 is covered with a skin material in which a foamed polyurethane sheet is bonded to a surface fabric and a polyurethane film is bonded to the back surface thereof, such as a fabric or synthetic leather, and the interior covered with the skin is filled with the foamed polyurethane material. Since the skin material has the above-described structure, the rigidity is high.

Fig. 2 shows the headrest 100 as viewed from the bottom surface side. In the state of being viewed in fig. 2, a groove portion 150 is formed in the vicinity of the upper and lower centers of the gate-shaped central portion 120, the upper side of which abuts against the lower skin material. Further, a hole 160 is formed in the central portion 120 below the groove portion 150, and a pipe for supplying the urethane foam material to the inside of the skin formed in a bag shape passes through the hole 160. The support posts 180 extend from the raised

portions

130 and 140 on either side of the central portion 120.

Hereinafter, a step of forming the headrest 100 by sewing a skin material and filling foamed polyurethane therein will be described with reference to the drawings.

Fig. 3 shows a shape of a skin portion (hereinafter, simply referred to as a skin portion) 111 on the front surface side of the body portion 110, of the skin covering the surface of the body portion 110, as viewed from the back surface side. The skin portion 111 actually has a more complicated three-dimensional shape, but is shown in a simple shape for the sake of simplicity of explanation. A skin portion 121 is sewn to the skin portion 111, and the skin portion 121 corresponds to a portion forming a lower gate shape. The skin portion 121 actually has a more complicated three-dimensional shape, but is shown in a simple shape for the sake of simplicity of explanation.

As shown in fig. 3, a thin skin material 113 (hereinafter, also referred to as a thin skin material on the front surface side) is sewn to the protrusion 112 at the lower portion of the skin portion 121 at a portion passing through a sewn portion 114 (hereinafter, also referred to as a sewn portion on the front surface side) in the vicinity of the front end portion. The thin skin material 113 is formed of the same material as the surface fabric of a skin material such as a fabric, synthetic leather, or the like. Since the thin skin material 113 is formed thinner than the skin material constituting the protrusion 112, it has lower rigidity than the protrusion 112 and is more easily bent than the protrusion 112.

Fig. 4 shows a state in which the front surface side skin portion 111 and the side surface portion, not shown, are sewn together by the sewing portion 115. The skin 211 on the rear surface side (see fig. 7; hereinafter, also simply referred to as skin) is also sewn to the side surface portion, not shown, along a position corresponding to the sewn portion 115. A thin skin material 113 sewn to the front skin portion 111 and a thin skin material 213 sewn to the rear skin portion 211 (hereinafter, also referred to as a rear thin skin material) are also sewn to the sewn portion 115. In this state, the unsewn portions of the upper ends of the

thin skin materials

113 and 213 serve as openings 313, and are formed into a bag shape by the front-side skin portion 111, the rear-side skin portion 211, and the side surface portion, not shown. In this state, the front surface side of the skin portion 111 on the front surface side and the front surface side of the skin portion 211 on the rear surface side are opposed to each other.

Next, the front surface side skin portion 111, the rear surface side skin portion 211, and the side surface portion not shown formed in a bag shape are turned inside out through the opening 313 which is an unsewn portion of the upper end portions of the

thin skin materials

113 and 213. As a result, as shown in fig. 5, the front surface side of the skin portion 111, the rear surface side of the skin portion 211, and the side surface portion, not shown, are present on the outer side.

In a state where the

skin portions

111 and 121 are formed in a bag shape with the front surface side being the outside, the support column 180 is inserted into the bag-

shaped skin portions

111 and 121 through a hole, not shown, formed in the skin portion 111, and both end portions of the support column 180 are projected to the outside of the skin portion 111 as shown in fig. 6.

Next, in a state where the support post 180 is mounted inside, as shown in fig. 7, the opening 313, which is the unseamed portion of the upper end portions of the

thin skin materials

113 and 213, is sewn to the sewn portion 115, and the bag-like opening is completely closed.

Fig. 8 shows a view of the B-B section of fig. 7 in this state. The front thin skin material 113 sewn to the protrusion 112 of the front skin portion 111 (hereinafter also referred to as the front protrusion) by the sewn portion 114 and the rear thin skin material 213 sewn to the protrusion 212 of the rear skin portion 211 (hereinafter also referred to as the rear protrusion) by the sewn portion 214 are sewn to the front sewing portion 115 near the front end, and the bag-shaped opening is closed.

Next, in a state where the support column 180 is mounted inside, as shown in fig. 9, the front-side thin skin material 113 and the rear-side thin skin material 213, and the front-side protrusion 112 and the rear-side protrusion 212 are pressed into the space between the

skin portions

111 and 121 formed in the bag shape. As a result, as shown in fig. 9, the central portion 120 is formed in a gate shape with the central portion depressed.

At this time, since the front-side thin skin material 113 and the rear-side thin skin material 213 are less rigid and more easily bent than the front-side protrusion 112 and the rear-side protrusion 212, the front-side thin skin material 113 and the rear-side thin skin material 213, and the front-side protrusion 112 and the rear-side protrusion 212, which are sewn at the sewing portion 115, can be relatively easily pressed into the space between the

skin portions

111 and 121 formed in the bag shape.

On the other hand, in the case where the front-side thin skin material 113 and the rear-side thin skin material 213 are not used, the front-side protrusion 112 and the vicinity of the front end portion of the rear-side protrusion 212 are sewn together to close the opening. As described above, when the front-side protrusion 112 and the rear-side protrusion 212 having a structure in which the vicinity of the distal end portion is sewn to close the opening are pushed into the space between the

skin portions

111 and 121 formed in a bag shape, the front-side protrusion 112 and the rear-side protrusion 212 have high rigidity, and therefore, the work of pushing into the space between the

skin portions

111 and 121 formed in a bag shape is poor, and a relatively long time is required. In addition, the appearance after press-fitting is unstable due to poor workability, and variations in quality are likely to occur.

Therefore, by adopting the configuration as in this embodiment, the workability of the operation of press-fitting the thin skin material 113 on the front surface side and the thin skin material 213 on the rear surface side, and the protrusion 112 on the front surface side and the protrusion 212 on the rear surface side, which are sewn at the sewn portion 115, into the space between the

skin portions

111 and 121 formed into the bag shape can be improved, and the appearance shape after press-fitting can be made uniform and high quality can be maintained.

Fig. 10 shows a view of section C-C of fig. 9 in the orientation in this state. In fig. 10, the portions above the

skin portions

111 and 211 are the outer sides of the skin portions formed in a bag shape, and the portions below the

skin portions

111 and 211 are the inner sides of the skin portions formed in a bag shape. The

skin portions

111 and 211, and the front thin skin material 113 and the rear thin skin material 213 sewn together by the sewn portion 115 are pressed into the bag-shaped portions formed by the

skin portions

111 and 211.

In this state, the front thin skin material 113 and the rear thin skin material 213 are not present outside the skin portions formed in a bag shape above the

skin portions

111 and 211 in fig. 10.

In this manner, in a state where the

skin portions

111 and 211, and the front-side thin skin material 113 and the rear-side thin skin material 213 sewn by the sewn portion 115 are pressed into the inside of the bag-shaped portion formed by the

skin portions

111 and 211, as shown in fig. 11, the tube 302 is passed through the hole 160 (see fig. 2), and the polyurethane foam material is supplied from the polyurethane foam groove 301 into the bag-shaped skin. Thereby, the foamed polyurethane material supplied to the inside of the skin formed in a bag shape is foamed and filled in the inside of the skin formed in a bag shape.

At this time, the front thin skin material 113 sewn to the protrusion 112 of the front skin 111 by the sewn portion 114 and the rear thin skin material 213 sewn to the protrusion 212 of the rear skin 211 by the sewn portion 214 are sewn to close the bag-like opening by the sewn portion 115 near the front end, and therefore, the polyurethane foamed inside the bag-like skin does not leak to the outside of the bag-like skin.

Further, the polyurethane foamed inside the skin formed in a bag shape pushes out the skin formed in a bag shape from the inside toward the outside. Thus, the portions from the corner portions of the

epidermis portions

111 and 211 to the sewn

portions

114 and 214 shown in fig. 10 are pushed out in the direction of approaching each other and brought into contact with each other, and the groove portion 150 described in fig. 2 is formed.

As a result, as described in fig. 9, the thin skin material 113 on the front surface side and the thin skin material 213 on the rear surface side, and the protrusion 112 on the front surface side and the protrusion 212 on the rear surface side, which are pressed into the space between the

skin portions

111 and 211 formed into a bag shape, cannot be seen from the outside. This makes it possible to form the headrest 100 having an aesthetically pleasing appearance as shown in fig. 1.

In the present embodiment described above, as shown in fig. 7 and 10, the state in which the front-side thin skin material 113 and the rear-side thin skin material 213 are sewn to the surface fabric side of the surfaces of the front-side protrusions 112 and the rear-side protrusions 212, respectively, has been described, but the front-side thin skin material 113 and the rear-side thin skin material 213 may be sewn to the polyurethane film side of the rear surfaces of the front-side protrusions 112 and the rear-side protrusions 212, respectively.

In addition, in the present embodiment, the following steps are explained: after the back side and the front side of the skin formed in a bag shape are shifted as shown in fig. 5, the support column 180 is inserted into the interior of the skin formed in a bag shape as shown in fig. 6, and then the thin skin material 113 on the front side and the thin skin material 213 on the rear side are sewn at the sewn portion 115 near the front end portion as shown in fig. 7, but the thin skin material 113 on the front side and the thin skin material 213 on the rear side may be sewn at the sewn portion 115 near the front end portion after the back side and the front side of the skin formed in a bag shape are shifted, and then the support column 180 may be inserted into the interior of the skin formed in a bag shape.

The support post 180 may be attached before the back side and the front side of the skin formed in a bag shape are shifted, and then the back side and the front side of the skin formed in a bag shape may be shifted. This is effective not in the case where the support column 180 is formed by merely bending a tube but in the case of a structure in which another member is connected to the tube by welding or the like.

According to the present embodiment, even in the case of the door-shaped headrest, it is possible to perform foam molding by injecting the material of the foam material into the interior of the skin member formed on the surface without impairing the aesthetic appearance of the door-shaped headrest. In this case, the foam can be reliably prevented from leaking. Further, the operation of pressing the portion of the protrusion including the opening formed in the bottom portion of the cover into the bag body can be performed relatively easily and reliably.

Modification example 1

In the above-described embodiment, the example in which the front-surface-side thin skin material 113 and the rear-surface-side thin skin material 213 are formed of the same material as the surface fabric of the skin material such as a woven fabric or a synthetic leather has been described, but in the present modification, the front-surface-side thin skin material 113 and the rear-surface-side thin skin material 213 are formed using a material (for example, a soft nonwoven fabric) that is different from the surface fabric of the skin material and is softer than the surface fabric of the skin material.

In this manner, when a soft nonwoven fabric is used as the thin skin material 113 on the front surface side and the thin skin material 213 on the rear surface side, the operation of pressing the thin skin material 113 on the front surface side and the thin skin material 213 on the rear surface side, and the protrusion 112 on the front surface side and the protrusion 212 on the rear surface side, which are described in fig. 9, into the space between the

skin portions

111 and 121 formed in the bag shape can be performed relatively easily, and the workability can be improved, and the appearance shape after pressing can be made uniform and high quality can be maintained.

Since the processing steps of the headrest 100 of the present modification are the same as those described in embodiment 1, detailed description thereof is omitted.

Modification 2

In the above embodiment, the example in which the front-side thin skin material 113 and the rear-side thin skin material 213 are sewn at the sewing portion 115 near the front end portion to close the bag-like opening has been described, but instead of sewing, the front-side thin skin material 113 and the rear-side thin skin material 213 may be bonded to each other by heating the front-side thin skin material 113 and the rear-side thin skin material 213 at the position corresponding to the sewing portion 115 with an adhesive (hot melt) interposed therebetween.

The present invention has been described specifically by way of the embodiments, but the present invention is not limited to the embodiments described above, and it goes without saying that various modifications can be made without departing from the scope of the present invention. For example, the above-described embodiments are described in detail to facilitate understanding of the present invention, and are not necessarily limited to the embodiments having all the structures described. In addition, deletion, and replacement of a known configuration can be performed for a part of the configuration of the embodiment.

Claims

1. A headrest for a vehicle, which is a headrest mounted on a vehicle seat, characterized by comprising:

a skin covering a surface;

a foaming member filled in the inside covered with the skin; and

a strut extending outward from the skin filled with the foamed member in the interior,

the headrest has a door-like shape in which a central portion of a lower surface is depressed,

a groove portion formed by abutting the skin is formed in the central portion of the recessed gate shape,

in the groove portion, a member softer than the skin is sewn to each end portion of the skin subjected to the butt joint.

2. The headrest for vehicles according to claim 1,

the members that are softer than the skin after being sewn to the respective end portions are sewn to each other.

3. The headrest for vehicles according to claim 1,

and members which are sewn to the respective end portions and are softer than the skin are bonded to each other.

4. The headrest for vehicles according to claim 1 or 2,

the skin is formed into a closed pouch shape by sewing a plurality of skin members with the soft member.

5. The headrest for vehicles according to claim 1 or 2,

the skin is formed by overlapping a plurality of members, and a member softer than the skin after sewing the respective end portions of the skin is the same member as a member forming a part of the plurality of members of the skin.

6. The headrest for vehicles according to claim 1 or 2,

the member softer than the skin after sewing with the respective end portions of the skin is a member different from a member forming the skin.

7. The headrest for vehicles according to any one of claims 1 to 3,

holes for filling the material of the foam material into the interior covered by the skin are formed in the center portion in the vicinity of the groove portions of the skin.

8. A headrest for a vehicle, which is a headrest mounted on a vehicle seat, characterized in that,

the headrest covers the surface with a skin and is internally filled with a foam member,

a groove portion formed by abutting the skin is formed in the central portion of the door shape,

in the groove portion, the end portions of the skin that have been butted are sewn together with a member that is softer than the skin, and the end portions of the skin that have been sewn together are sewn together with a member that is softer than the skin.

9. The headrest for vehicles according to claim 8,

the skin is formed by overlapping a plurality of members, and a member softer than the skin after sewing with respective end portions of the skin is the same member as a member forming a part of the plurality of members of the skin.

10. The headrest for vehicles according to claim 8,

the member softer than the skin after sewing with the respective end portions of the skin is a member different from the member forming the skin.

11. The headrest for vehicles according to any one of claims 8 to 10,